1 We have been born into this world, and added to the people of God, at that period wherein already the herb from a grain of mustard seed has spread out its branches; wherein already the leaven, which at first was contemptible, has leavened three measures, that is, the whole round world repeopled by the three sons of Noe: for from East and West and North and South shall come they that shall sit down with the Patriarchs, while those shall have been driven without, that have been born of their flesh and have not imitated their faith.
Unto his glory then of Christ's Church our eyes we have opened; and that barren one, for whom joy was proclaimed and foretold, because she was to have more sons than she that had the husband, her we have found to be such an one as has forgotten the reproaches and infamy of her widowhood: and so we may perhaps wonder when we chance to read in any prophecy the words of Christ's humiliation, or our own. And it may be, that we are less affected by them; because we have not come at that time when these things were read with zest, in that tribulation abounded.
But again if we think of the abundance of tribulations, and observe the way wherein we are walking (if indeed we do walk in it), how narrow it is, and how through straits and tribulations it leads unto rest everlasting, and how that very thing which in human affairs is called felicity, is more to be feared than misery; since indeed misery ofttimes does bring out of tribulation a good fruit, but felicity does corrupt the soul with a perverse security, and gives place for the Devil the Tempter— when, I say, we shall have judged prudently and rightly, as the salted victim did, that “human life upon earth is trial,” and that no one is at all secure, nor ought to be secure, until he be come to that country, whence no one that is a friend goes forth, into which no one that is an enemy is admitted, even now in the very glory of the Church we acknowledge the voices of our tribulation: and being members of Christ, subject to our Head in the bond of love, and mutually supporting one another, we will say from the Psalms, that which here we have found the Martyrs said, who were before us; that tribulation is common to all men from the beginning even unto the end....
Source: The Enarrations, or Expositions, on the Psalms (New Advent)